Skip to main content
Journal cover image

Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in √ s = 8 TeV pp collisions with the ATLAS detector

Publication ,  Journal Article
The ATLAS collaboration, ; Aad, G; Abbott, B; Abdallah, J; Abdel Khalek, S; Abdinov, O; Aben, R; Abi, B; Abolins, M; AbouZeid, OS; Abreu, H ...
Published in: Journal of High Energy Physics
November 1, 2014

The results of a search for top squark (stop) pair production in final states with one isolated lepton, jets, and missing transverse momentum are reported. The analysis is performed with proton-proton collision data at (Formula presented.) = 8 TeV collected with the ATLAS detector at the LHC in 2012 corresponding to an integrated luminosity of 20 fb−1. The lightest supersymmetric particle (LSP) is taken to be the lightest neutralino which only interacts weakly and is assumed to be stable. The stop decay modes considered are those to a top quark and the LSP as well as to a bottom quark and the lightest chargino, where the chargino decays to the LSP by emitting a W boson. A wide range of scenarios with different mass splittings between the stop, the lightest neutralino and the lightest chargino are considered, including cases where the W bosons or the top quarks are off-shell. Decay modes involving the heavier charginos and neutralinos are addressed using a set of phenomenological models of supersymmetry. No significant excess over the Standard Model prediction is observed. A stop with a mass between 210 and 640 GeV decaying directly to a top quark and a massless LSP is excluded at 95% confidence level, and in models where the mass of the lightest chargino is twice that of the LSP, stops are excluded at 95% confidence level up to a mass of 500 GeV for an LSP mass in the range of 100 to 150 GeV. Stringent exclusion limits are also derived for all other stop decay modes considered, and model-independent upper limits are set on the visible cross-section for processes beyond the Standard Model.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

ISSN

1126-6708

Publication Date

November 1, 2014

Volume

2014

Issue

11

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

Citation

APA
Chicago
ICMJE
MLA
NLM
The ATLAS collaboration, ., Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., … Arnaez, O. (2014). Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in √ s = 8 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics, 2014(11). https://doi.org/10.1007/JHEP11(2014)118
The ATLAS collaboration, L., G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, et al. “Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in √ s = 8 TeV pp collisions with the ATLAS detector.” Journal of High Energy Physics 2014, no. 11 (November 1, 2014). https://doi.org/10.1007/JHEP11(2014)118.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdinov O, et al. Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in √ s = 8 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics. 2014 Nov 1;2014(11).
The ATLAS collaboration, L., et al. “Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in √ s = 8 TeV pp collisions with the ATLAS detector.” Journal of High Energy Physics, vol. 2014, no. 11, Nov. 2014. Scopus, doi:10.1007/JHEP11(2014)118.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdinov O, Aben R, Abi B, Abolins M, AbouZeid OS, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Agatonovic-Jovin T, Aguilar-Saavedra JA, Agustoni M, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimoto G, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexandre G, Alexopoulos T, Alhroob M, Alimonti G, Alio L, Alison J, Allbrooke BMM, Allison LJ, Allport PP, Almond J, Aloisio A, Alonso A, Alonso F, Alpigiani C, Altheimer A, Alvarez Gonzalez B, Alviggi MG, Amako K, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amram N, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Anduaga XS, Angelidakis S, Angelozzi I, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antonaki A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aperio Bella L, Apolle R, Arabidze G, Aracena I, Arai Y, Araque JP, Arce ATH, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ, Arnaez O. Search for top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in √ s = 8 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics. 2014 Nov 1;2014(11).
Journal cover image

Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

ISSN

1126-6708

Publication Date

November 1, 2014

Volume

2014

Issue

11

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics